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Old 01-19-2013, 07:45 AM   #39
URAL CT
Adventurer
 
Joined: Dec 2007
Oddometer: 82
Battery Isolator

12 volt and 24 volt Smart Battery Isolators with 80+ amps pass through and solid-state control


Battery isolator (or split charge relay) allows an auxiliary battery to be charged by the vehicle's system, yet prevents the starting battery from being run down by your equipment when the engine is off.

I carry a C-pap machine with me when out traveling & camping. I use this to charge my PC925 battery after each use. It is always charging & connected to the main battery but when the main battery voltage goes down to 12.6V it disconnects the auxiliary battery. The aux battery is parasitic only until the main battery drops to 12.6V then the two are disconnected. Have been working for me since 2009.
Cheers. (dunno why the font color is different from the post, oh well)
CT
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